It means that we have to change from CellSetSingleType to CellSetExplicit

Rob still wants to have a special case for structured cell sets

[MS-20/07] Advanced Flow Algorithms

FTLE is merged in and documented

Stream surface merged in a while ago

Dave plans to have the documentation done this week

Rountable notes

We were contacted by Mahesh Rajan about having a VTK-m instance on some OSTI-managed resources. Not sure who is taking point in that.

During this week while testing the new contour filters, Ollie found some issues with the gradient computation used to generate normals. Part of this was a bug in how normals were computed in pyramids, which Ken fixed. However, Ollie was still getting NaN values for the gradient in pyramids. After looking into this more, Ken found that this was caused by clipping a hexahedron with the plane intersecting exactly at 3 points. This caused the clip tables to create degenerate pyramids, and the gradient computation is sensitive to degenerate pyramids. Ken checked and saw that the clip in ParaView has the same behavior with respect to both the clip filter and the gradient computation, so at least for now we can probably ignore this. The easiest solution is to change the test to put the plane in general position.

This discussion brought up a desire to design a better mechanism for error and warning reporting.